EN25
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3 revisions | jasirs94 at Mar 25, 2017 08:02 PM | |
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25G25 nature of light. The first false conjecture was that the rays | 25G25 nature of light. The first false conjecture was that the rays started from the eye; the second was right in making them vibrations, but Newton rejected it in favor of the emission theory of which, I believe there were three forms. Counting those as five erroneous theories, there next came two theories of transverse vibrations in an ether, and though one of them was hardly wrong, they ultimately gave way to the electromagnetic theory which may be reckoned as the eighth and right one. Of two secrets of physics it may be said that the very first definite theories were right. |